I bought a cover off of Bass Pro Shops for $100, it was on sale.  Later I researched it and have had a lot of people say that these covers can easily scratch the gelcoat.  I have a new 18 foot boat, and I have a factory dust cover on it, which is canvas, and then the Bass Pro cover on top.  If your boat is a little older, than the BPS should serve you ok.  I could bring it to a meeting if you want to feel it out. 
When I have $500+ for an Aurora, I just might get one.

John,
I would love to take the boat cover.
Will you be at the next meeting? I really appreicate this. It may be a little big but with trolling motor on front it should work out fine. If you can't make it to the next meeting let me know. I will be at fish-n-kids tonight and tomorrow if you are going to that.
Thanks much
Kathy

John,
We can't thank you enough for the boat cover. It's going to work out great!! It is people like you that make this club great!
Thanks again,
Kathy & Virgil